Requesting Mods

Hello, currently I am creating a Gun Gale Online based server. I am asking if anyone knows of any good mods to add to the server to enhance the game play for people. I am currently using Flan's Modern Warfare mod which adds quite a few guns to Minecraft but I need more because I feel as if I'm missing something. If anyone helps out and tells me about a good mod then I'll be sure to look into it.